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在马氏体相变温度 (Ms)接近室温的Ni52 Mn2 4 Ga2 4 单晶中观察到了单纯由温度诱发的完整的热弹性中间马氏体相变 .发现由于机械研磨过程中引入的内应力所导致的晶格畸变可以抑制中间马氏体相变 .另外 ,通过对同样组分的退火和未退火的多晶样品的研究 ,发现中间马氏体相变与晶体的内部应力密切相关
A complete thermo-elastic intermediate martensitic transformation induced by temperature was observed in Ni52Mn2 4 Ga2 4 single crystals with a martensitic transformation temperature (Ms) close to room temperature. It was found that due to the internal stress introduced during mechanical milling Which leads to the lattice distortion can inhibit the intermediate martensite transformation.In addition, by the same composition of the annealed and unannealed polycrystalline samples studied and found that the intermediate martensitic transformation and crystal internal stress are closely related